public class TwoDimensionalArray04 {
	public static void main(String[] args) {
		int arr[][] = {{4,6}, {1,4,5,7}, {-2}};
		int sum = 0;
		for(int i = 0; i < arr.length; i++) {
			for(int j = 0; j < arr[i].length; j++) {
				sum += arr[i][j];
			}
		}
		System.out.println("sum=" + sum);
	}
}